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5 October, 18:53

Solve the system by substitution.

у = x

-2x + 4y = 16

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Answers (2)
  1. 5 October, 19:14
    0
    Step-by-step explanation:

    y = x

    -2x + 4y = 16

    -2x + 4x = 16

    2x = 16

    x = 8

    y = 8

    (8,8)
  2. 5 October, 19:15
    0
    Since y=x, then both variables must be the same.

    -2x + 4y = 16

    You have to have 16 on both sides

    -2 (8) + 4 (8) = 16

    -16 + 32 = 16

    16=16
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